Well, admitedly this is Popular Science and not say the Nature or the New England Journal of Medicine, but according to Male Pregnancy: A Dangerous Proposition it is at least in theory possible for a man to carry a baby. Keep in mind that the fetus creates the placenta. Delivering the baby is quite another question.
That said hopefully whatever magic was used on Daniel left a uterus inside him as that article points out that while a uterus is designed such that the placenta can separate, your standard abdominal cavity of either gender is decidedly not designed in that way (which is why it is a very bad thing when a fetus somehow ends up outside the uterus and in the abdominal cavity in a woman, which fortunately is not too common).
The TL:DR answer - Magic, medicine, and whoa-boy is Daniel's insurance rate going to go up.
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That said hopefully whatever magic was used on Daniel left a uterus inside him as that article points out that while a uterus is designed such that the placenta can separate, your standard abdominal cavity of either gender is decidedly not designed in that way (which is why it is a very bad thing when a fetus somehow ends up outside the uterus and in the abdominal cavity in a woman, which fortunately is not too common).
The TL:DR answer - Magic, medicine, and whoa-boy is Daniel's insurance rate going to go up.